Gold Coast secure Miller's signature

Gold Coast United's A-League title aspirations have been handed a boost with the signing of former Brisbane Roar midfielder Charlie Miller.

The ex-Scotland international had been training with United after walking out on the Roar last week when coach Ange Postecoglou told him he would not be part of his plans next season.

Miller has signed a short-term injury replacement contract with United and will take his place in the squad for this weekend's trip to Newcastle.

The former Glasgow Rangers schemer joins as a replacement player for Brazilian midfielder Robson, who is ruled out until the New Year with a knee injury.

Coach Miron Bleiberg says the opportunity to sign Miller was unexpected and an early Christmas present for United.

"I was asked by (goalkeeper) Scott Higgins if Charlie could come and train with us to keep fit and we were happy to accommodate as that is the gentlemanly thing to do," Bleiberg said in a club statement.

"We began to explore our options last Monday and we are very happy that we have finally arrived at a situation whereby Charlie was able to sign with us."

Miller says he was excited about signing for Bleiberg's side and hoped to make a significant contribution to United's title quest.

"It all happened very quickly. I was hoping just to train with Gold Coast to stay fit, so to have ended up signing with the club is an added bonus," he said.